Horseshoe.



S. TADAKUMA.

HORSESHOE. I APPLICATION FILED MAR-221 1915.

l 1 50,554. Patented Aug. 17', 1915.

"ma/Mrs SEIZI TADAKUMA, OF PORTLAND, OREGON.

HGRSEEHOE.

Specification 01' Letters Patent.

Application filed March 2 2, 1915. i Serial No. 16,248.

To all 7(710971 it 12mg; concern Be it known that I, berzr 'lAoAKUMii, a subject of the Emperor of Japan, res dingv at Portland. inthe county of lrlultrioinah I and State of Oregon, have mvented a nowcnd Improved Horseshoe, of which the following' is a specification.

This invention has tor its object to pro vide an iuipr' red construction 01" horse shoe having u special cooperative errom the toe and heel callr receiving-- portioiis adapted for detachahly ind adjustab'ly holding peculiarly sh pod toe n'nd'heel calla members'that more especially designed to provide for quickly and conveniently changing the cnlks from sharp shoes to mild shoes or semionurl shoes and also for replacing worn out milks without necessitating the removal of the shoe from the hoof.

Another object of my inven-tion is to provide an improved horseshoe of the general type stated having the toe and heel portions designed for interchangeably receiving the different forms of cnlks adopted for either every day or ordinary road surfaces uses for calks especially designed'for use on icy snowy or other slippery surifaces' and 1n .which the construction of the shoe body proper and the calls; adapted iorheing 1nterchangeably connected with the seid shoe body is such, hat the shoe can be economi- Cally made and the operation of taking oil.

improved horse shoe, the same-being shown equipped with smooth celks for every def; orordinary uses. Fig. 2 1s :1 similar V ew of the shoe shown in Fig. 1, the bottom side and theinner oi the toe end being the more fully illustrated. Fig. View of the shoebody proper, the celks being omitted. F 4 is a perspective View of theupper end of the shoe body shown in F ig. .3, illustrating more clearly the iuterlocki I scribed. 1g. 5'is a. perspective: Vl6W lookiug at the inside of the smooth toe calk member, showing the corresponding dovetailed Wedges and V shaped recesses that co engage with the aforesaid ribs and grooves. Fig. dis. a perspective. View of the smooth cell: member viewed from the inner side thereof. 7 is detail perspective view of the aforesaid shoe body the callrsof those adapted for Win ter use being shown in place. Eig. dis a perspective View of one of the pointed or toe icecelks-hereinsfter referred 3 is a. top plan ng" gr oves sndribs hereiiie'fter do to. Fig. 9 is a perspective View of the, heel ice cslks. Fig. 10 isifihross section of the toe end of the shoe with one .ofthe ice or sharpcalk members applied for use.

My invention may be readily embodied in of the Well known forms of horse shoes. In the present showing, the body of the shoe 1 has the ordinary arrangement of the neilholes 3, the outer ends of the that is, thet end of the holes that open through the' under face of the shoe, being elongated to receive the elongated. heads 49 of the nails elthat secure the shoe to the hoof in the usual way. The heel ends l0-10 of the shoe, have reduced tongue-like portions 5-5, proiidedwith one or more transverse apertures 5050 for the passa'ge of the screw bolts 6-6 that extend there:

like portions-T 171 of the heel collcs said. holes,

through and through the opposite apertures 70-7O in theopposlte sides of the soclretf 3 which,"for the ordinary or mud-surface uses is made of, cast iron and provided \Yiiilbit pendent smooth heel or tread as is clearly shown in Fig. 1. slipperycelks 7 are madeof steelfiencl their tread surfaces are orovidedqvith sharp prongs hr points 73--: 3, as is oleorlyshown F or icy or portion '52,.

psvements orroztd uses the heel 7 b refereneeto which andto Fl it w will be understood that the heel celks when theshoe, as is shoe,

against the hoof as is applied, slide onto the tongue-like terminals of the heel ends of the shoeand are secured by the screws 6 and the nuts 60.

The toe end of the shoe is flat at the top or hoof engaging, side which is smooth throughout its entire surface to snugly fit uses is made of cast iron and comprises a body portion that includes a fiat tread member or block 12 that is integral with and extends transversely across the bottom of a flat segmentalportion 13 that merges with a vertical segmental flange 14 which, .when the parts are assembled, extends upon and fits against the outer curved toe end of the shoe and for firmly holding the said'toe '--ca1k against lateral motion and'for fixedly shown in Fig. 2. v

'For .ioyor otherwise slippery roadways GO -winter calks are provided for replacing;

. calks Y holding it in the desired position in the shoe body proper the said flat segmental portion 13' of the-calk has parallel dovetailed flanges 22 on its under face that slidably engage the dovetailed grooves 9 in the shoe body and to further provide for a rigid connection of the toe calk'with the shoe body, the said calk includes a shaped filler portion 15 that fits within the shaped groove 8 of the shoe body andhas wedge shaped grooves 16 for receiving thewedge-like ribs 81 on the wall 80 of the toe end of the shoe, as is clearly shown in Fig. 10.- v

For quickly applying the toe to theshoe or for removing the same as necessary, the vertical flange 14 of the call; has a. pair of horizontal apertures 1717- that register with horizontal apertures 18--18 in the toe end of the shoe, and the said apertures receive clamp up to bring the vertical flange 14 of the calk in close contact with the front end of the shoe and for holding the rib and ooved portions of the shoe and calk in a tlght en- ,gagement, by the nuts 21 applied to the inner ends of the said the calks 7, and the said winter calks, illustrated in detail are of steel, the 1500' having a series of'tr'iangular sharp creeper lugs 75 andthe heel calks having the case in theyordiwhen inclined for ordinary roadway groove in versely across the toe end thereof, the front face of the said bolts 20-20 which are drawn over the front end of ingthe' calk members shoe.

bolts, as is clearly a Jverse grooves that extend len jtoe end, and a said under sideof the said toe end which their tread facesV grooved to form sharp edges 73, as shown.

From the foregoin with the drawings, the complete construction, the manner of use and the advantages ofmy invention will be readily apparent.

By reason of forming the toe portion of the shoe in the manner described, the change of'the calks can be easily effected by the driver by simply unscrewing the bolts 6 and new calks as readily substituted. Furthermore by reason of forming theshoe with the undercut or transverse shaped recessrandshaping the toe calk in the manner shown and described, the said calk is positively and firmly held against vertical or lateral displacement.

What I claim is:

taken in connection 1 '-1. A'horse' shoe having a smooth uninterrupted' or more end, sai

the shoe, the said toe end having an undercut transverse recess that extends at right angles to the aforesaid grooves and a calk that includes a fiat 'or base member having integral pendent tread portions and upwardly projected flanges for slidably engaging the recesses' in the aforesaid base ooves on the under side of the toe member, the latter having a segmental flange for projecting over the toe end of-the shoe and means for detachably clamping the calk onto the said shoe. Y

grooves extending lengthwise of" hoof engaging top surface, one

2. .A horse shoehaving a smooth uninterrupted hoof engaging surface, at least one its under face that extends trans:

toe end having'a' V shaped transverse recess and atleast one a erture thatextends transversely through't e said toe end; in combination with a calk that includes a base portion having pendent tread portions, a flange on its upper face for slidably engaging the groovein the under face of the shoe, a filler portion for fitting into the V-shaped recesses of the toe end of the shoe, said calk having an aperture or apertures for registering apertures in the toe end of the shoe and formed-"with a segmental flange thatextends the'shoe and lock bolt and nut devices that cooperate with the shoe and the'calk members for detachably hold locked on the said.

3. In a horse shoe, the combination with the shoe body having one or more transhwise of the saidshoe body across the un haped recess across the extends at right angles to the said transverse groove, the tapered wall of the said --shap ed recess having one or more wedgewith the aperture or er side of the like 1'ibs,'of'a calk that includes a base portion having transverse flanges that endwise slidably engage ithe transverse grooves on the under face of the toe end of 'the'shoe,

' the said calk also including a segmental flange that projects up over thefront or toe end of the shoe and has a -sh'aped filler portion for engaging the -shaped'recess in the front end 10f the shoe, the saidfillenportion .having Wedge shaped giooxes for 10 sEI'zI TADAKUMA. Witnesses W. J. MAKELIM',

' L. M. GRIFFIN Copies of this patent niay be obtained for five eentseach, by addressing the Commissioner of Patents,

' Washington, D. G. 

